Lock.



Patejnted May 4, 1915. v

3 SHEETS-SHEET I.

[Mug/V7026.

I. H. SHAW.

LOCK.

APPLICATJON FILED JULY 24. 1911.

J. H. SHAW.

LOCK.

APPLICATION FILED JULY 24. 1911.

Patented May 4, 1915.

3 SHEETS-SHEET 2.

' III WHQVESSES; I 75 dn/d-m fNVE/VTOR.

A TTOR/VEY.

J. H. SHAW.

LOCK.

APPLICATION FILED JULY 24. I911.

Patented May 4,1915.

3 SHEETS-SHEET 3 INVENTOR.

IVITNESSES- v Fa/ m A fro/wr i an srarns rarnnr enrich.

JOHN H. SHAW, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO' SARGENT & COMPANY,

.OF NEW HAVEN, CONNECTICUT, A CORPORATION OF CONNECTICUT.

LOCK.

Application filed July 24, 1911.

To all whom it may concern:

Be it known that I, JOHN H. SHAW, of the city and county of New Haven and State of Connecticut, have invented new and useful Improvements in Locks, of which the following is a full, clear, and exact description when taken in connection with the accompanying drawings, which form a part thereof.

My invention relates to looks of that type in which a bolt, which may be either a latch bolt or a dead-bolt, is separately operable from the inside or from the outside of the door, and in which the door when locked from the inside cannot be unlocked from the outside except by the use of a special master key, commonly known as an emergency key, and the object of the invention is to improve the mechanism, whereby such action of the said master key is effected, and also to generally improve the construction of locks of the general type above described.

Another object of the, invention is toprovide a lock of. the pin tumbler type in,

which the emergency key does not need to be of extraordinary length, and wherein" such key can, in fact, be of substantially the .side of the lock; Fig. 4:, a similar view showing the dead-bolt protracted, and also the dead-locking mechanism operated by means of a thumb turn, or similar instrumentality, on the inside of the lock; Fig. 5,

a reverse view of Fig. 3 showing the parts in the same position, and operated by the same means as the parts in said Fig. 3; Fig. 6, a, reverse View of Fig. 4; Fig. 7, a vertical section through the pin tumbler cylinder lock controlling the bolt operating means, and showing the guest or change key inserted in the lock; Fig. 8-, a detail Specification of Letters Patent.

Serial No. 640,167.

side view looking from the top of the knob' yoke, and the stop means adapted to cooperate therewith; Fig. 9, a view similar to Fig. 7, but showing the-emergency key inserted in the lock; Fig. 10, a detail plan view of the dead-bolt; Fig. 11, a similar view showing said bolt and the tumbler for independently controlling the operation thereof; Fig. 12, a detail plan view of the coupling tumbler which also serves to act as a deadlocking means for the deadbolt; Fig. 13, a detail plan view of the master maids key; Fig. 14, a detail plan view of the particular master key known as the emergency key; and Fig. 15, a similar view of the grand master key.

In all figures, similar letters of reference represent like parts.

Referring to the drawings, 1 is a lock casing, which is provided with a front plate 2. The lock shown is of the mortise type (see Figs. 1 and 2), although it is obvious that the invention may also be applied to locks of other forms. Within the casing 1 is slidably mounted a latch bolt 3, having a shank 4:, provided with a head 5, adapted to engage the shoulder 6 of a sliding yoke 7 mounted within the casing and controlled by, the wings 8 of a hub 9, which hub is adapted to-receive the spindle of a knob 10 on the outside of the door and a knob 11 on the inside thereof. The knob 10 not only serves as a means for retracting the latch bolt, but also as a manual indicator member to indicate by its freely rotatable or its fixed non-rotatable position, respectively, whether the door is unlocked from the inside or is locked from the inside, when the hub connected to said member is stopped from movement by the dead-locking means hereinafter described. A spring 12 mounted on a pin 13 presses against the knob yoke and tends to normally press the latter into protracted position. When the knob hub is not dogged the knobs are adapted to be turned by hand to retract the latch bolt through the engagement of the wings of the hub with the yoke, and of the latter with the head of the latch bolt shank in the ordinary manner.

Within the casing is slidably mounted a dead bolt 13 (see Figs. 1, and which has a shank 14, provided with a central slot Patented May 4, 1915.

15, through which projects the tumbler post or stump'16, with which is adapted to engage the lug 17 of a pivoted tumbler 18 carried by the boltand movable therewith v I tracting andretracting said bolt. Between these talons extends a slot 20 in which-moves the shoulder 21 (see Figs. 2, 11 and 7) of the tumbler 18. The tumbler is' normally spring pressed upwardlyby means of a spring 22 secured to the outer end thereof and bearing against'a lug 23 carried by the dead-bolt. The tumbler is provided with adownwardly projecting elongated coupling hook 24, which is adapted to be engaged by a lug 25, projecting from a coupling and deadlocking tumbler 26, which is pivotally mounted on aslide 27, and is bodily movable with said slide arallel to the movementof the dead-bolt, and is adapted to have such parallel movement both independently of the dead-bolt when the coupling hook is disengaged, and jointly with said dead-bolt when the coupling hook is in operative position.

. n The shank, of the dead-bolt and the rear door only, by means of a suitable instrumenendof the tumbler l8 are-provided with respective registering slots 29 and 30, through which is adapted toproject the hub 31, which hub is operable from theinside of the tality, such as a thumb turn32. The hub is provided with projecting wings 33, which are adapted to embrace alrdpin 34 projecting from the coupling a I tumbler 26. The action of the hub- 31 when operated by the thumb turn, or similarinstrumentality, on the inside of the 'door' is to simultaneously protract and retract the dead-bolt, and both ofthe tumblers through the direct engagement of said hub with the tumbler 26, which serves by means of the engagement of its lug 25 with the hook 24 of I the tumbler 18 to first move said hook, and tumbler 18 downward so as to release the latter from its tumbler stump, andthen to push said latter tumbler and its connected dead-bolt laterally into protracted'position.' Similarly, both tumblers and the dead-bolt are released and retracted by the reverse movement of' the inside operating hub. When the bolt has thus from the inside, together with both the tumblers and the slide 27 which are bodily movable with said bolt, it will'be seen thatthe tumbler 26 by means of the engagement of it's lug 35 with the tumbler stump 36, pro jecting from the face of the casing, will serve to dead-lock the slide 27 in deadlockdeadlocking eeii protracted ing position back of the dead-bolt so thatthe dead-bolt can only be retracted by first releasing said tumbler.

The slide 27 (see particularly Figs. 5 and 6) is provided at its upper edge with a lug 37 projecting into the paths of shoulders 38 and 39 constituting an elongated slot in a dead-bolt, the shoulder 3 8 of which qpresses against and serves to carry back the slide with the bolt when the tumblers are released, while the elongation of the slot permits the movement of the'dead-bolt independently of the tumbler 26 and the slide 27 L At its lower edge the slide 27 is provided with front and rear downwardly projecting lugs 40, which are'adapted to alternately contact with the inclined frontand rear faces 41 and 42 respectively of a rocking cam 43 (see Figs. 5, 6 and 8); This cam is pivotally mounted on a pin 44 projecting from thebase of the case ing, and it has a curved notch 45 embracing a pin 46, which thus serves to limit the rocking movement of the cam member. A stop lug 47 projects outwardly from one end of the cam member, and in'the rocking movement of said member said stop lug is adapted to be projected into and Withdrawn from engagement with a notch 48 formed .in the under edge of the sliding yoke 7. The cam plate 43. thus serves as a catch 'member to. dog the knobyyoke against movement thus serving to lock the'knob against rotation,

and cause the latterto act. as an indicating means to indicate tothe maid, or to anyone else on the outside of the door, that the door has been locked from the inside. This catch is' engaged with the yoke in the forward movement of the slide by means of the rear projection of said slide striking against the rear cam face 42, and is released from en gagement with the yoke by the contact of the front projection'of the slide with; the

front cam face 41 of the cam member or catch late.

' In addition to winged hub for controlling the operation of the dead-bolt from the inside a pin tumbler cylinder lock is provided for controlling, the operation of said bolt and itstumblers from the outside of the lock. Referring to this mechanism, 49 constitutes a cylinder adapted to contain a series of pin tumblers. 50 is a rotatable sleeve'eccentrically mounted within keyplug eccentrically mounted within the sleeve. A flat change key 52 (see Fig. 13) j is adapted to fit the tumblers 53 controlling the barrel 51. On the end of the barrel is .a bolt and tumbler operating member consisting of a dog 54 .or rollback rotatable'withthe barrel. The sleeve 50a1so carries a rothe thumb turn operated said cylinder, and 51 is a rotatable barrel or.

tatable dog or'rollback55 at its ends, and i this dog is adapted to "be rotated when the cylmder lock is engaged by either the key 56 (see .Fig. 7 in which a master maids key is shown), or when engaged by the key 57 (Fig. 13) which is the grand master key. It is also adapted to be turned by the emergency key 58 (Fig. 14). Each of these keys by the position to which it moves the different lines of tumbler pins is adapted to couple the barrel and sleeve together to cause theirjoint rotation and the joint operation of the dogs when the key is turned. All of these keys are adapted to lock and unlock the door when the same has been locked from the outside, except the emergency key 58 and each of them is incapable of unlocking the door when the same has been locked from the inside, while the emergency key is adapted in conjunction with the means now to be described to unlock the door when the same has been locked from the inside, and to also protract the bolt and its dead-locking means, so that the door cannot be unlocked from the outside by any of the other keys, and can only be un-- locked again by the emergency key itself.

. In the form shown, the barrel 51 is provided near its outer end with a pivoted pawl or catch 59, the pivot of which is at the upper portion of said pawl or catch when the barrel is in its normal inoperative position, so that the pawl will hang straight down with its outer edge flush with the outer face of the barrel, as shown in Fig. 7. The edges of the change key, master maids and grand master keys, '52, 56 and 57, are so formed that when inserted in the cylinder they will fit the inner inclined face of the pawl without moving thelatter from its inoperative position. The edge of the key 58, however, is so shaped that upon its insertion into the cylinder it will engage the inclined shoulder of the pawl and push said pawl outwardly on its pivot projecting it out beyond the face of the sleeve. As the pawl is thus protracted, it will enter the slot 61 formed in a rotatable dog or rollback 62 pivotally mounted in the base plate of the casing. The slot 61 is normally closed by a spring stop member 63, which serves to prevent the entrance of the pawl into the slot except when said pawl is pushed forward by the emergency key. The dog 62 is secured to a rotatable diskor hub 64, which has a flange bearing against the outer face of the casing, and is provided with a spring pressed catch pin adapted to take into a hole in the casing in order to yieldingly hold the dog in its normal position, such as shown in Figs. 2, 3 and 4, ready for the insertion of the key and with its slot 61 in registry with the slot of the lock cylinder. This emergency key dog has its operating tongue in line with and adapted to operatively engage the arm 66 of the coupling and dea'dlocking tumbler 26, which extends from the inner end of the said tumbler, and pro-' jects behind the dead-bolt. This coupling it the tumbler 18 and thedead-bolt.

I bler.

and deadlocking tumbler 26 is thus adapted to be operated either by the thumb turn hub 311or by the dog 62, and by those members on y.

The operation of the device is as follows: When the door is to be locked from the outside by either the change key 52, the master maids key 56, or the grand master key 57, either of such keys is inserted in the cylinder, and if the change key is used the dog 54 on the end of the barrel will be operated to engage the tumbler 18 and swing said tumbler on its p'ivot sufficiently to release it from its tumbler stump 16, while at the same time the dog engages the talons of the deadbolt and protracts said dead-bolt, which has been released by the tumbler. If either the key 56 or the key 57 is employed, the barrel and sleeve will be coupled together by the racking of the pin tumblers, and both dogs 54 and 55 will be moved so as to carry the tumbler 18 out-of locked position and protract the bolt. In the movement .of the tumbler 18 by the keys 52, 56 and 57, it will be seen that the hook 24 will be carried below the lug 25 of the tumbler 26, so as to free the tumbler 18 from engagement with the said tumbler 26. When the bolt has been so protracted by any one of the said keys, it may be retracted also by any of them. The bolt is protracted from the inside by means of the thumb turn 32 whichswings one of the wings 33 against the projecting pin of the coupling and deadlocking tumbler 26, so as to first swing said tumbler downwardly on its pivot, releasing the same from engagement with its tumbler stump 36, and also by the engagement of the lug 25 with the hook 24 moving the bolt tumbler 18 to released position, and thereupon'the continued movement of the thumb turn hub will throw the tumbler 26 forwardly, which will carry 1s movement will protract the bolt and will enable the tumbler 26 to engage the outer face of its tumbler post, thus serving to deadlock the bolt against retracted movement by means of the slide 27 movable with said tum- At the same time, the slide 27 is carried forward by the bodily movement of the tumbler 26 and the rear projection 29 of said slidewill strike against the rear inclined cam face 42 of the catch member 43 and lock said member until its stop 47 engages the notch in the knob yoke, thus dogging the knobyoke and hub, and thus serving t6 fix the knob or other movable member connected to said hub in position, so that it may. tangibly indicate to anyone outside the room that the door is locked from the inside. This position of the parts is indicated in Figs. 4 and 6. In such position it will be impossible for anyone of the keys 52, 56 or 57 to retract the deadbolt or to release the latch bolt, for the reason that the operating 30 emergency key, whereupon the deadlocking dogs controlled by said keys are out of line with the tumbler and dead-locking member,

, 26; hence, when'the door is locked from the inside it cannot be unlockedfrom the outside by the change key, the master maids key, or the grand master key. 'Upon the insertion of the emergency key, however, the pawl 59 will be protracted into engagement with the slot 60 of the dog 62 (as shown in Fig. 9'),

, also be rotated by the emergency key, and I 20 such'dogs will engage the talons of the deadbolt and retract the same in the continued rotation of the key.

Should it be desired to lock the door from the "outside so that it cannot .be unlocked from the outside except byrm'eans of thekey by which it hasbeen locked in order, for instance, to prevent the recntrance into the room of a guest, or an unauthorized person who may have a g'uestkey, the door is so locked from the outside by means of the member 26 is carried into operative position and thedoor cannot be unlocked, except by the emergencykey itself.

It will be understood from the foregoing description that I provide, in combination with the mechanism of themortise lock or latch, a pin tumbler lock having, the usual key plug, with the usual keyway, a rollback- 54, or its equivalent, for operating the lock mechanism, connected with the; rear end of the key plug, a second rollback 62, or its equivalent, a plurality of keys insertible into'the keyway, and a member such as the catch or swinging part 59, which is movable relative to the rollback '54, by only one of the keys (e. g., the emergency key), and adapted to actuate the vlock mechanism by means of the second rollback 62; Obviously, it is not essential, in the broad aspects of the invention that the member 59 be of the pivoted type, and it will be apparent likewise that its particular relation relative to the auxiliary rollback 62, orits equivalent, and

to the other parts, is susceptible of many changes, without departing from the scope ofthe invention.

Various changes in these and other par- 1 ticulars may be adopted without departing from the scope of the claims. I do not claim herein the specific form 0 cylinder lock, as this forms the subject matter of my divisional application filedlon the 12th day of June, 1914, Serial No. 844,997.

I do not claim herein the knob dogging means, the deadlocking means for the latch bolt, the tumbler mechanism for the dead bolt, or other features claimed, broadly, in the application of Albert A. Page, filed April 10, 1911, Serial Number 620,149. What I do claim is v 1. The combination with lock mechanism, of a pin tumbler lock having a key plug, said key plug being provided with a keyway,

a rollback for operating said lock mecha-' nism, connected with the rear endof the key plug, a second rollback, a plurality of keys insertible into said keyway, and a member movable relative to said first rollback by 7 only one of said keys, and adapted to actuate -way, and a member projecting'into the keyway, and movable relative to the first rollback by engagement with one of said keys, and adapted when so moved to operate another part of said lock mechanism by said second rollback, said movable member being inoperative by another of said keys; substantially as described.

. 3. The combination with a 'mor'tise lock having a case and two separate parts or members therein, iof a pin tumbler lock having a key plu said key plug provided with a keyway, a rollback connected with the rear end of the key plugand adapted to operate one-part or member of said mortise lock, a'second rollback adapted to operate another part-or member of said mortise look, a plurality of keys insertible into said keyway, and a movable member shiftable relative to the first rollback by one of said keys only, and adapted when so shifted to operate the second named part or member of said mortise lockby means of said second rollback; substantially as described.

4; The combination'with lock mechanism, including two separate parts or members, of a pin tumbler lock'having a key plug, said key plug provided with a keyway, a rollback connected with the rear end of the key plug and adapted to operate one of the parts or members of said lock mechanism, a second rollback adapted to operate another part or member of said lock mechanism, two keys insertible into said keyway, and a member projecting into the keyway and movable relative to the first rollback by one of said keys to operate the second named part ofsaid. lockmechanism by means of said sec ond rollback, sald member bemg inoperatlve by another of said keys to actuate the sec ond named part of said lock mechanism by means of said second named rollback; substantially as described.

5, In a lock, the combination with a bolt mechanism having two tumblers, of a pin tumbler lock having a key plug, said key plug provided with a keyway, a rollback erating said operating devices jointly from the inside, a key'operable from the outside upon one of said operating devices only, a movable coupling member mounted in said lock intermediate said operating devices, and a key operable from the outside to actuate said coupling member and jointly operate saidoperating devices, substantially as described.

7. In a lock, the combination with a plurality of devices to be operated, of a cylinder lock comprising a-rotatable cylindrical member, a dogcarried by said member, a rotatable dog separate from said member, and a movable coupling member mounted in the lock and operable to couple said separate dog and cylinder-carried dog together, sub- I stantially as described.

8. In a lock, the combination with a plurality of devices to be operated lying in different planes, of operating members respectively operable in the planes of the devices and arranged in line, one of said members having independent operation, a coupling device mounted in the lock and movable from one plane into the other, and operable to connect said operatingmembers, and a key operable upon said coupling device, substantiallyas described.

9. In a lock, the combination with a pinrality of operating dogs arranged in line, of a key operated member projectible from one dog into the other to couple the same together, substantially as described.

10. In a lock, the combination with a plurality of operating dogs, of a catch member pivoted in the lock and projectible longitudinally of the keyway to couple said dogs together, substantially as described.

11. In a lock, the combination with separate devices to be operated, of a plurality of keys, a common keyway for said keys, and means in the keyway permitting the operation of one of said devices singly by one key, said means being projectible rearwardly of the keyway by another key to effect the joint operation of said devices; substantially as described. i

12. In a lock, the combination of different devices to be operated, separate operating devices therefor, a plurality of keys, a common keyway for said keys, and a device mounted in and movable lengthwise of said keyway to effect the individual operation of one of said operating devices, or the joint operation of said operating devices; substantially as described.

13. In a lock. the zombination with a plurality of operating members, of a plurality of keys, a common keyway, and a member mounted in the lock and movable longitudinally of the keyway to couple said operating members, together, substantially as described.

14. In a lock, the combination with a plu-.

rality of operating members, of a change key, a series of master keys, and a movable coupling device for said members operable by one of said master keys only, substantially as described.

. 15. In a lock, the combination with a plu rality of operating members, of a plurality of keys, a common keyway, and a pivoted catch member projectible longitudinally of the keyway by one of said keys only, to

'couple said operating members together,

substantially as described.

16. In a lock, the combination with a plurality of operating dogs, of a catch movable in the line of the keyway from one dog to the other to couple the same, means to hold said catch from operative engagement, and

a key having means to operate said catch,

substantially as described.

17. In a lock, the combination with a plurality of operating dogs arranged n l ne, of a pivoted coupling member pro ectlble from one dog toward the other, one of said dogs having a slot to receive said member, and yielding means normally closing sald slot, substantially as described.

18. In a lock, a case, a cylinder lock mounted in one wall of the case, a dog mounted on the oppositewall of the case, and a member in the keyway of said cyl nder lock .projectible by a key into operative engagement with said dog; substantially as described.

19. In a look, a bolt, a tumbler therefor, a dog for operating said tumbler, a second tumbler for the bolt, a dog for operatmg said second tumbler, and key actuated means mounted in the lock to couple said dogs together; substantially as descrlbed.

20. In a lock, 2. case, a cylinder lock mounted in one wall of the case and havlng a barrel, a dog or bit rotatably mounted on the opposite wall of the case, and a key perated member to couple said barrel to said dog; substantially as described.

21. The combination with a mortise lock mechanism having two parts or members, of a cylinder lock having a keyway, a key insertible into said keyway, another and different key insertible into said keyway, a

- rollback carried by said cylinder lock to c0- operate with one of the parts or members of said mortise lock mechanism and operable by both of said keys, and a member projecting into the rear end of the keyway, and

movable rearwardly by engagement with one,

of said keys into cooperation with said other part or member of said mortise lock mechanism, said key-engaging member being inoperative by said other key; substantially as described.

22. A cylinder lock having a key plug, said key plug provided with a keyway, a

change key insertible into said key ay, an

emergency key insertible into said eyway, a rollback operatively connected with said key plug and rotatable by both of said keys, vand a member projecting into the rear end of the keyway, and movable rearwardly by said emergency key, said member being immovable by said change key, in combination v with a mortise lock mechanism having a part to cooperate withlsaid rollback, and another part to cooperate with said emergency-key-actuated member; substantially as described.

23. A cylinder lock having two keys, a rollback operable by both of said keys, and a coupling member forming a part of said cylinder lock and operative by. one of said from the rear of the cylinder lock, and mov-.

able by one of said keys but not by the other of said keys, and a rollback operable by both of said keys, in combination with lock mechanism having a part tocooperate with said auxiliary member, and another part to cooperate with said rollback; substantially as described.

In witness whereof I have hereunto set my hand on the 22nd day of July, 1911.

JOHN H. SHAW."

Witnesses I W. N. THOMAS, W. H. SHUMWAY. 

